公开(公告)号：US07638107B1

公开(公告)日：2009-12-29

申请号：US12137302

申请日：2008-06-11

申请人： Jeffrey Philip Wirt ,  Dan W. Ott ,  Brian James Duck

发明人： Jeffrey Philip Wirt ,  Dan W. Ott ,  Brian James Duck

IPC分类号： B01D53/56 ,  B01D53/62 ,  B01D53/86 ,  B01D53/90

CPC分类号： B01D53/8631 ,  B01D53/8656 ,  B01D2251/2062 ,  B01D2257/404 ,  B01D2257/502

摘要： A multi-bed selective catalytic reduction system comprising a gas input duct, a first ammonia injection grid assembly located downstream from the gas input duct, a first selective catalytic reduction catalyst assembly located downstream from the first ammonia injection grid assembly, a second ammonia injection grid assembly located downstream from the first selective catalytic reduction catalyst assembly, a second selective catalytic reduction catalyst assembly located downstream from the second ammonia injection grid assembly, and an exhaust stack located downstream from the second selective catalytic reduction catalyst assembly. By passing a combustion waste stream through two sets of ammonia injection grid assemblies and selective catalytic reduction catalyst assemblies, the multi-bed selective catalytic reduction system removes more nitrogen oxide emissions from the waste stream, uses less ammonia to do so, and results in less ammonia emissions than systems with only one ammonia injection grid assembly and selective catalytic reduction catalyst assembly.

摘要翻译： 一种多床选择性催化还原系统，包括气体输入管道，位于气体输入管道下游的第一氨注入栅格组件，位于第一氨注入栅组件下游的第一选择性催化还原催化剂组件，第二氨注入栅格 位于第一选择性催化还原催化剂组件下游的第二选择性催化还原催化剂组件，位于第二氨注入格栅组件下游的第二选择性催化还原催化剂组件和位于第二选择性催化还原催化剂组件下游的排气叠层。 通过将燃烧废物流通过两组氨注入格栅组件和选择性催化还原催化剂组件，多床选择性催化还原系统从废物流中除去更多的氮氧化物排放物，使用较少的氨来实现，并且导致较少的 氨排放量比仅有一个氨注入电网组件和选择性催化还原催化剂组件的系统。